John S. Hodgson

C. Strong

Ed Hammel

Edward F. “Ed” Hammel was an American chemist. Hammel had just completed his Ph.D. at Princeton University when he joined a Canadian heavy water project sponsored by the school in 1941.

C. L. McCallum

C. L. McCallum worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Eric Jette

Eric Jette (1897-1963) was an American metallurgist.  He was a professor of metallurgy at Columbia University School of Mines before being recruited for the Manhattan Project.